Computational complexity optimization of neural network-based equalizers in digital signal processing: a comprehensive approach

P Freire, S Srivallapanondh, B Spinnler… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Experimental results based on offline processing reported at optical conferences
increasingly rely on neural network-based equalizers for accurate data recovery. However …

High-throughput hardware deployment of pruned neural network based nonlinear equalization for 100-Gbps short-reach optical interconnect

M Li, W Zhang, Q Chen, Z He - Optics Letters, 2021 - opg.optica.org
Hardware implementation of neural network based nonlinear equalizers will encounter
tremendous challenges due to a high-throughput data stream and high computational …

Experimental implementation of a neural network optical channel equalizer in restricted hardware using pruning and quantization

DA Ron, PJ Freire, JE Prilepsky, M Kamalian-Kopae… - Scientific Reports, 2022 - nature.com
The deployment of artificial neural networks-based optical channel equalizers on edge-
computing devices is critically important for the next generation of optical communication …

Reducing computational complexity of neural networks in optical channel equalization: From concepts to implementation

PJ Freire, A Napoli, B Spinnler… - Journal of Lightwave …, 2023 - ieeexplore.ieee.org
This paper introduces a novel methodology for developing low-complexity neural network
(NN) based equalizers to address impairments in high-speed coherent optical transmission …

Low-complexity multi-task learning aided neural networks for equalization in short-reach optical interconnects

Z Xu, S Dong, JH Manton, W Shieh - Journal of Lightwave …, 2022 - opg.optica.org
With the rapid development of machine learning technologies in recent years, different types
of neural network (NN)-based equalizers have been proposed and proved to be efficient …

Computational complexity comparison of feedforward/radial basis function/recurrent neural network-based equalizer for a 50-Gb/s PAM4 direct-detection optical link

Z Xu, C Sun, T Ji, JH Manton, W Shieh - Optics Express, 2019 - opg.optica.org
The computational complexity and system bit-error-rate (BER) performance of four types of
neural-network-based nonlinear equalizers are analyzed for a 50-Gb/s pulse amplitude …

Neural networks-based equalizers for coherent optical transmission: Caveats and pitfalls

PJ Freire, A Napoli, B Spinnler, N Costa… - IEEE Journal of …, 2022 - ieeexplore.ieee.org
This paper performs a detailed, multi-faceted analysis of key challenges and common
design caveats related to the development of efficient neural networks (NN) based nonlinear …

Performance versus complexity study of neural network equalizers in coherent optical systems

PJ Freire, Y Osadchuk, B Spinnler, A Napoli… - Journal of Lightwave …, 2021 - opg.optica.org
We present the results of the comparative performance-versus-complexity analysis for the
several types of artificial neural networks (NNs) used for nonlinear channel equalization in …

Implementing neural network-based equalizers in a coherent optical transmission system using field-programmable gate arrays

PJ Freire, S Srivallapanondh, M Anderson… - Journal of Lightwave …, 2023 - opg.optica.org
In this work, we demonstrate the offline FPGA realization of both recurrent and feedforward
neural network (NN)-based equalizers for nonlinearity compensation in coherent optical …

Low complexity neural network equalization based on multi-symbol output technique for 200+ Gbps IM/DD short reach optical system

B Sang, W Zhou, Y Tan, M Kong, C Wang… - Journal of Lightwave …, 2022 - opg.optica.org
Nowadays, Neural network (NN) has been proved to be an effective solution for nonlinear
equalization in short reach optical systems. However, recent research has mainly focused …